#include <iostream>
#include <string>

using namespace std;

class Solution
{
public:
    int strStr(string haystack, string needle)
    {
        if (haystack.size() < needle.size())
            return -1;
        for (int start = 0; start < haystack.size(); start++)
        {
            if (haystack.substr(start, needle.size()) == needle)
                return start;
        }
        return -1;
    }
};

int main()
{
    cout << "Code28" << endl;
    Solution s;
    return 0;
}